/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8                               :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/limits.h"
#include "libc/runtime/pathconf.h"
#include "libc/sysv/consts/_posix.h"
#include "libc/sysv/consts/limits.h"
#include "libc/sysv/errfuns.h"

long fpathconf(int fd, int name) {
  switch (name) {
    case _PC_LINK_MAX:
      return _POSIX_LINK_MAX;
    case _PC_MAX_CANON:
      return _POSIX_MAX_CANON;
    case _PC_MAX_INPUT:
      return _POSIX_MAX_INPUT;
    case _PC_NAME_MAX:
      return NAME_MAX;
    case _PC_PATH_MAX:
      return PATH_MAX;
    case _PC_PIPE_BUF:
      if (IsLinux() || IsWindows())
        return 4096;
      return PIPE_BUF;  // 512
    case _PC_CHOWN_RESTRICTED:
      return 1;
    case _PC_NO_TRUNC:
      return 1;
    case _PC_VDISABLE:
      return 0;
    case _PC_SYNC_IO:
      return 1;
    case _PC_ASYNC_IO:
      return -1;
    case _PC_PRIO_IO:
      return -1;
    case _PC_SOCK_MAXBUF:
      return -1;
    case _PC_FILESIZEBITS:
      return FILESIZEBITS;
    case _PC_REC_INCR_XFER_SIZE:
      return 4096;
    case _PC_REC_MAX_XFER_SIZE:
      return 4096;
    case _PC_REC_MIN_XFER_SIZE:
      return 4096;
    case _PC_REC_XFER_ALIGN:
      return 4096;
    case _PC_ALLOC_SIZE_MIN:
      return 4096;
    case _PC_SYMLINK_MAX:
      return -1;
    case _PC_2_SYMLINKS:
      return 1;
    default:
      return einval();
  }
}

long pathconf(const char *path, int name) {
  return fpathconf(-1, name);
}
